Strange dizzyness after taking medicine?

I just recently gotten an ear infection :/ my doctor gave me medication , Amoxicillin. I'm suppose to take it 3 times a day , every 8 hours. I'm also taking advil to kill the pain. I've noticed that sometimes when I move or stand up from sitting down I feel slightly dizzy and it feels like my heads spinning? .. Is this normal? Or should i consult my doctor about it? :/